粘性土中沉管夯扩桩的再认识

The Reviewing of The Enlargin Pipes By Sinking Pipes In Cohesive Soil

本文着重介绍支于粘性土层中的沉管夯扩桩的夯扩头形成的客观必然性;该桩型的荷载～沉降曲线特征与桩型的划分;夯扩桩承载力主要是由投料多少形成扩头面积大小决定;不论长桩或短桩其造价均较一般沉管桩便宜近20％,相对其他桩则造价上的优势必将更明显。通过系统论证说明沉管夯扩桩型在粘性土地层条件下确实是值得推广的。

This article Lags emphasis on the objective certainty of changing the head of the sinkig pipe into an enlargin one while workig in cohesive soil; the bearig loads of this type of pipe-the characteristic of its sinkig curve and the classification of this pipe, The load bearig capacity of the enlargin pipes is mainly depended on the dimension of the enlarged head which is formed by the weight of the materials we put in, The manufactured cost is cheaper as much as near 20% comparing to general sinking pipes regardless of long pipes or short ones. This superiority in manufactured cost would be far more conspicuaus comparing to other kind of pipes. Throngh systimastic study it proves that in conditions of cohesive soil,the application of enlargin pipes by sinking pipe is worth popularizing.